Add/Subtract Fractions Unlike Denominators

Front

What is the first step in subtracting fractions with unlike denominators?

Back

Find a common denominator for both fractions.

Front

How do you find a common denominator for two fractions?

Back

Identify the least common multiple (LCM) of the denominators.

Front

What is the process for adding fractions with unlike denominators?

Back

1. Find a common denominator. 2. Convert each fraction to an equivalent fraction with the common denominator. 3. Add the numerators and keep the common denominator.

Front

What is the simplest form of a fraction?

Back

A fraction is in simplest form when the numerator and denominator have no common factors other than 1.

Front

How do you convert a fraction to its simplest form?

Back

Divide both the numerator and denominator by their greatest common divisor (GCD).

Front

What is the GCD of 12 and 8?

Back

The GCD of 12 and 8 is 4.

Front

What is the least common multiple (LCM) of 4 and 5?

Back

The LCM of 4 and 5 is 20.

Front

When adding fractions, what do you do if the numerators are different?

Back

You still add the numerators after converting to a common denominator.

Front

What is the result of 1/3 + 5/12?

Back

The result is 3/4.

Front

How do you subtract 1/3 from 8/9?

Back

Convert both fractions to a common denominator (which is 9), then subtract the numerators.